Necticut



vH. H. MCGEE. SYRINGE'VALVE.

APPLICATION FILED JUNE 3,1920.

Patented June 6, 1922.

HOWARD H. Maenner WATERnUnY, coNNEoTIcUT, AssIGNoR To THE GOODYEARSINDIA RUBBER. GLOVE MANUFACTURING COMPANY, A CORPORATION OF CON-NEGTICUT.

To all whom, t lmay concern Be it known that I, HOWARD a citizen of theUnitedtates, residing at Waterbur county of New Haven', and State ofonnecticut, have invented. certain new and useful Improvements inSyringe Valves, of which the following is a full, clear, and exactdescription.

This invention relates to a valve, which while capable of general use,is more particularly designed for fountain syringes and similar devices.

In the manufacture of fountain syringes it l is impracticable t0 equipthem with an ordinary form of valve, such as a' turning plug or needlevalve, owing to the expense, the weight, liability to leakage, etc.Moreover, ifhmade of metal they would quickly become corroded anddangerous chemical actions caused by the iiuids used, and the use ofglass is out of the question by reason of its fragility and the extraexpense for. grinding ythe joints. -Hence the common practice in the arthas been to equip them.with metal pinch cocks or shut-offs surroundingthe outside of the nozzle supply tube, which shutoffs in one positionallo-w free passage of the Huid through the tube and in another positionpinch the walls of the tube together to shut off the supply. Theseshut-offs are at best a make shift and are open to numerous objections.They are sometimes (lost when detached, their position on the tube isnot fixed, if not accurately centered on the tube they fail` tocompletely Shut off, they are easily sprung out of shape and aresometimes hard to operate, particularly when used by a woman, and bothhands are required to use the syringe, one to hold the` nozzle and oneto operate the shut-olf. A still more .serious defect is that the userafter finishing frequently leaves the shutolf in'closing or pinchingposition on the tube, and as the device may not be used again for sometime this oversight results in a` permanent distortion and weakening ofthe tube walls at the point where pinched,

causing the tube to break or leak.

An object of my invention is to provide a manually operable valve orshut-ofi' which is entirely enclosed in the conduit in which it isinterposed and which has no exterior operating mechanism.

Specification ofLetters Patent.

H. MGGEEJ` may be actuated by merely SYRINGE VALVE.

.Patenteagune e, 1922.

Application ala Junera, 1920.` seriafm. 386,188.

Another object to provide a valve which i flexing the condu1 t 1n whlchit is enclosed..

Still another object is to vprovide a valve whlch isnon-corrodible, willnot leak and is self closing l A further object is to provide acontrolmeans'for fountain syringes which is sunple,

-eicient, not liable to get out of order, inexpensive to replace ifbroken, and cannot become misplaced or lost.

A still further object is to provide a cornbined fountain syringe nozzleand control means operable by one hand.

F 0ra full and complete disclosure of my invention reference is had tothe accompanying specification and drawings, in which latter Fig. '1 isa view of a fountain syringe equipped with my improved control means;

Fig. 2 is a side view, partly in section, of

the valve and discharge pipe or nozzle, andy illustrating in dottedlines the manner in whlch the valve is opened.. K,

Fig. 3 is a section' through the portion of the supplyV conduit formingthe valve casing; and

Fig. 4 is a section through the valve and valve seat. i v

Referring to the drawings the numeral 1 designates the reservoir of afountain syringe, 2 the soft rubber' supply tube, 3 the soft rubbercasing of 4my improved controlling valve, and 4 the discharge pipe ornozzle, the casing 3 forming in effect a continuation of the supply tube2. The casing 3,

whichis preferably a molded plug of 'soft rubber, is formed at one endwith a nipple 5 for connection with the supply tube, while at its otherend it is provided with a socket -6 for reception of the nipple of'nozzle 4. Itv

will be noted that at the point where the bore of casing' 3 iscontracted in forming nipple 5 a shoulder 7 is produced, whilev at theopposite end of the casing a secondslightly undercut shoulder 8 is,formed adjacent the socket 6, and between said shoulders a valve member9 and valve seat member 10 are disposed. The valve member 9, which ispreferably of hard rubber but which may be made of any other suitablematerial, is provided with an enlarged rear end portion 11,' a reducedintermediate portion 12,

and a head 13. rilhe enlarged portion 11, which is of a size to snuglyfit the bore of casing 3, is provide-d with a central bore 14 adapted toregister with the bore of nipple 5, said b ore 1i having branches orforks 15 discharging into thespace between the Wall of f casing 3 andthe reduced portion 12 of the valvemember and the valve head 13 isprovided with a plurality of peripheral chan- 7 and 8 of casing 3, asshown in Fig. 3, hence when the valve members are assembled in thecasing as shown in F ig. 2 the casing is slightly stretched or put undertension, with the result that the conical surface 17 of the valve headtends7 to center itself in the bore 18 of the valve seat and the valvemembers are held firmly together in closed position. The valve members 9and 10 may be readily inserted in the casing by forcing them throughsocket 6 and past shoulder 8, the

undercutting of said shoulder aiding both in vthe insertion ofthe partsand also in their retention in yielding engagement.

In operation the user grasps the casing 3 between the thumb and fingersopposite the pointof engagement of the members 9 and 10, and by bendingthe casing at this point the members are rocked upon each other, oneside of the conical surface 17 approaching the flat end wall of valveseat 10, While the opposite side of surface 17 recedes from said walland opens up a passage for the fiuid between channels 16 and bore 18 ofthe valve seat. During such bending .the opposite side Walls of casing 3have been placed under unequal tension and due to their elasticity theytend to instantly assume a straight position again and close the valveupon release of the bending pressure. By varying the pressure andconsequent degree of bending the flow may easily be regulated to thedesired amount. In using a fountain syringe the user ordinarily graspsthe rubber tube immediately adjacent the discharge pipe or nozzle andbends the tube at this point as the nozzle is inserted in the bodycavity to be treated, and by locating my improved control means at thispoint in the tube the valve is opened almost Without conscious effort onthe part of the user by a perfectly natural movement. In addition, bylocating the control means at this point and operating it in the mannerdescribed the user c/an simultaneously direct and control the ovv withone hand, which of course is impossible when using the old form of shutoff. Moreover, with the use ofmy control means there 1s a practicallyinstantaneous shut ofi of the flow location described, is capable ofgeneral use,

an example of which is in chemical labora-- tories, Where the use of theobjectionable pinch cock is common for controlling the flow of corrosiveor fother fluids through elastic tubes.

While in the specific embodiment disclosed the valve casing is shown asnormally straight and the valve operable by bending the casing to anangular position, it is obvious that it may be constructed in thereverse manner, and the present disclosure Will suggest many othervariations to those skilled in the art, Without departing from the scopeof the appended claims.

Having thus described my invention what l claim and desire to protect byLetters Patent is l. 1n combination, a tensioned flexible and elasticconduit, and means disposed Within the conduit and held in operativerelation by the tension thereof and operable by flexing the conduit for'controlling the passage of fluid therethrough.

2. ln combination, a tensioned flexible and elastic conduit, and meansenclosed therein for controlling the flow of fluid ntherethrough andactuated by a change in the tension of adjoining portions of theconduit.

3. in combination, a flexible conduit, and a removable valve and valveseat resiliently and positively held together therein in one positionand movable to another position by fiexure of the conduit.

et. in combination, a tensioned elastic ccnduit, valve mechanismoperatively held therein by the tension thereof and movable to open orclosed position, said valve mechanism being movable to one of saidpositions by the elasticity of the conduit and to the other position byflexure of the conduit.

5. ln combination, a valve and a valve seat having aroeking engagementto control the passage of fluid therethrough, and tensioned elasticmea-ns enclosing and normally holding said partsin one of theircontroling positions, whereby upon rocking them the parts are moved toanother controlling position. Y 7 6. In combination, a valve seat,avalve, and a tensioned elastic tube enclosing and normally holding saidparts in valve closing contact, whereby they may be moved to open thevalve by flexing the tube at their point of Contact, j

7. In combination, an elastic conduit hav-'.-v

ing internal shoulders, a valve and valve Seat disposedtherein betweensaid shoulders bending the conduit gagement.-

8. In combination, a flexible conduit havat their point lof en- 1o ingspaced shoulders in its bore, and a valve and valve 'seat disposed inalignment between said shoulders, said valve and seat A having. acombined length slightly greaterthan the distance between saidshoulders,

whereby they may be normally held in engagementby the elasticity of theconduit.

9. lIn combination, a valve seat v and a valve adapted'to engage thesame in rocking point of engagementthey may be rocked to open positionagainst the elasticity of the cnduit. Y r

l0. In combination, a valve seat having a central bore, a valve providedwith a head having a relatively obtuse seat-engag- .in surface adaptedin one position to close said bore, and elastic means-.completelysurrounding said' parts and normally yieldably holding them in valveclosing position.

11. In combination, an apertured valve seat, a valve having a rockingengagement with saidfseat to close said aperture, and a tensionedelastic valve casing surrounding said parts and holding them inengagement, whereby the valve may be rocked on its seat to open uponleXuI-e of lthe casing at the point of engagement.

engagement, a tens1oned elastic conduit 'en- Signed at Naugatuck,Conn.,uthis 28th d ay '2Q closlng said parts and normall holding of May,1920.

them 1n alignment and in close position,

whereby upon bending the conduit at. their HOWARD H. MOGEE.

